Possible Sources

Links:

http://www.epa.gov/acidrain/

http://www.epa.gov/ebtpages/airairpollutioneffects.html

http://www.who.int/topics/environmental_health/en/

http://www.epa.gov/ebtpages/wasthazardouswaste.html

http://www.epa.gov/bioindicators/html/indicator.html - indicator species. (Standard 4.3.10)

http://www.learner.org/interactives/garbage/hazardous.html - hazardous waste

Latest Findings on National Air Quality (pdf file):

- (Standard 4.3.12)

EPA's 2007 Report on the Environment: Highlights of National Trends (pdf file):

About Salmon and the lack thereof

Organizations to contact:

www.cleanair.org

http://www.sierraclub.org/

I have contacted EPA and Chesapeake Bay Foundation.

Books: